CN111065073B - A method for establishing an EPC bearer, a mobile management entity, and an Internet of Things terminal - Google Patents

Abstract

The invention provides an EPC bearer establishment method, which comprises the following steps: receiving attachment information sent by the terminal of the Internet of things, and judging whether the terminal of the Internet of things is a terminal of the Internet of things with a fixed position or not according to the type information of the terminal of the Internet of things contained in the attachment information; when the thing networking terminal is judged to be a fixed-position thing networking terminal, the service gateway and the PDN gateway are controlled to establish and store the bearing context information of the thing networking terminal, and meanwhile, an instruction for closing the periodic tracking area updating switch of the thing networking terminal is sent to the thing networking terminal, so that the thing networking terminal automatically closes the periodic tracking area updating switch of the thing networking terminal after receiving the instruction for closing the periodic tracking area updating switch of the thing networking terminal; and after the active duration contained in the attachment message, controlling the service gateway and the PDN gateway to delete the bearing context information of the terminal of the Internet of things. The invention also provides a mobile management entity and an Internet of things terminal; the invention relates to the technical field of communication.

Description

A method for establishing an EPC bearer, a mobile management entity, and an Internet of Things terminal

technical field

The present invention relates to the technical field of communications, and in particular to an EPC bearer establishment method, a mobility management entity and an Internet of Things terminal.

Background technique

The introduction of NB-IoT (Narrowband Internet of Things) technology has brought great improvements to LTE networks, that is, NB-IoT terminals (Internet of Things terminals) can work in power-saving mode, and terminals in power-saving mode, It only keeps the registration status without re-attaching or re-establishing the PDN connection, thereby reducing power consumption and extending battery life; in power-saving mode, the terminal is set with an active duration and a power-saving duration. During the active duration, the terminal can perform normal operations. During the power saving period, the terminal only remains in the registration state and is not activated.

In practical applications, the terminal establishes an EPS bearer during the attachment process, and the SGW (Serving Gateway) and PGW (PDN Gateway) will always save the bearer context of the terminal until the terminal is detached. For terminals, it does not make much sense to always save the bearer context of the terminal on the SGW and PGW, because the terminal does not communicate during the power-saving period, and when a large number of terminals are covered by one SGW, the SGW and PGW A large amount of terminal bearer context information stored on the network will undoubtedly occupy a large amount of memory resources of the SGW and PGW, thereby seriously affecting the performance of the SGW and PGW.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a method for establishing an EPC bearer, a mobility management entity, and an Internet of Things terminal to solve the problem that the EPC bearer establishment method existing in the prior art makes SGW and PGW's memory resource consumption is too much.

In order to solve the above technical problems, on the one hand, the present invention provides a method for establishing an EPC bearer, including:

receiving attachment information sent by the IoT terminal, the attachment information including: type information of the IoT terminal and power saving mode parameters, the power saving mode parameters including the active duration of the IoT terminal;

judging whether the IoT terminal is a fixed-position IoT terminal according to the type information of the IoT terminal;

When it is determined that the IoT terminal is an IoT terminal at a fixed location, the control service gateway and the PDN gateway establish and save the bearer context information of the IoT terminal, and at the same time send a message to the IoT terminal to disable its own periodic tracking an instruction of an area update switch, for the IoT terminal to automatically turn off its own periodic tracking area update switch after receiving the instruction to turn off its own periodic tracking area update switch;

After the active duration, control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal.

Preferably, the power saving mode parameters also include the power saving duration of the IoT terminal;

After the step of controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal, it further includes:

When the power-saving duration of the Internet of Things terminal ends, receiving a tracking area update request sent by the Internet of Things terminal;

After receiving the tracking area update request, controlling the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal;

After the active duration, continue to execute the controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal.

Preferably, after the control service gateway and the PDN gateway establish and save the bearer context information of the IoT terminal, and delete the bearer context information of the IoT terminal after the control service gateway and the PDN gateway Previously, also included:

Setting a timer; the timing duration of the timer is the active duration of the Internet of Things terminal;

monitoring whether the timer expires;

When it is detected that the timer expires, the step of controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal is executed.

On the other hand, the present invention also provides a method for establishing an EPC bearer, including:

Send attachment information to the mobility management entity, the attachment information includes: its own type information and power saving mode parameters, the power saving mode parameters include its own active duration, for the mobility management entity to receive the attachment information, judge whether the Internet of Things terminal is an Internet of Things terminal at a fixed location according to the type information, and after judging that the Internet of Things terminal is an Internet of Things terminal at a fixed location, control the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and after the active duration, control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal;

receiving an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity;

According to the instruction of turning off its own periodic tracking area update switch, turn off its own periodic tracking area update switch.

Preferably, the power saving mode parameter also includes its own power saving duration; the method also includes:

After receiving the instruction to turn off the periodic tracking area update switch returned by the mobility management entity, start a timer, and the timing duration of the timer is the sum of the active duration and the power saving duration;

Real-time monitoring of whether the timer is timed out;

When it is detected that the timer expires, a tracking area update request is sent to the mobility management entity, so that the mobility management entity controls the serving gateway and the PDN after receiving the tracking area update request The gateway establishes and saves the bearer context information of the IoT terminal.

In yet another aspect, the present invention also provides a mobility management entity, including:

The receiving unit is configured to receive the attachment information sent by the IoT terminal, the attachment information includes: the type information of the IoT terminal and a power saving mode parameter, and the power saving mode parameter includes the active duration of the IoT terminal ;

A judging unit, configured to judge whether the IoT terminal is a fixed-position IoT terminal according to the type information of the IoT terminal;

The first control unit is configured to control the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal when the judging unit determines that the IoT terminal is a fixed-position IoT terminal;

The sending unit is configured to send an instruction to the IoT terminal to turn off its own periodic tracking area update switch when the judging unit determines that the IoT terminal is a fixed-position IoT terminal, for the IoT terminal to After receiving the instruction to turn off its own periodic tracking area update switch, the terminal automatically turns off its own periodic tracking area update switch;

The first control unit is further configured to control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active duration.

Preferably, the power saving mode parameters also include the power saving duration of the IoT terminal;

The receiving unit is further configured to receive a tracking area update request sent by the Internet of Things terminal when the power-saving duration of the Internet of Things terminal ends;

The first control unit is further configured to, after the receiving unit receives the tracking area update request, control the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and also use After the active duration, control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal.

Preferably, the mobility management entity further includes: a timer, a second control unit and a monitoring unit;

Wherein, the second control unit is configured to control the service gateway and the PDN gateway after the first control unit controls the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and after the first control unit controls the service gateway and before the PDN gateway deletes the bearer context information of the IoT terminal, start the timer, and the timing duration of the timer is the active duration of the IoT terminal;

The monitoring unit is configured to monitor whether the timer expires, and when it is detected that the timer expires, instruct the first control unit to control the serving gateway and the PDN gateway to delete the IoT terminal The steps to carry context information.

In yet another aspect, the present invention also provides an Internet of Things terminal, including:

A sending unit, configured to send attachment information to a mobility management entity, where the attachment information includes: its own type information and power-saving mode parameters, and the power-saving mode parameters include its own active duration for the mobility management entity to After receiving the attachment information, judge whether the IoT terminal is a fixed-position IoT terminal according to the type information, and control the service gateway and the PDN gateway after judging that the IoT terminal is a fixed-position IoT terminal Establishing and saving the bearer context information of the IoT terminal, and controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active duration;

a receiving unit, configured to receive an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity;

An automatic closing unit, configured to automatically close its own periodic tracking area update switch after the receiving unit receives an instruction to close its own periodic tracking area update switch.

Preferably, the IoT terminal further includes: a timer, a timer control unit and a monitoring unit;

The power-saving mode parameters also include the power-saving duration of the Internet of Things terminal;

The timer control unit is configured to start the timer after the receiving unit receives an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity, and the timing duration of the timer is the The sum of the active duration and the power saving duration;

The monitoring unit is configured to monitor in real time whether the timer expires, and when it is detected that the timer expires, instruct the sending unit to send a tracking area update request to the mobility management entity for the mobile After receiving the tracking area update request, the management entity controls the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal.

Beneficial technical effect of the present invention:

The EPC bearer establishment method, mobility management entity and IoT terminal provided by the present invention, when the IoT terminal is active for a long time, the MME controls the SGW and PGW to establish and save the bearer context information of the IoT terminal, and when the IoT terminal is active When the duration ends, the SGW and PGW are controlled to delete the saved bearer context information of the IoT terminal, so that the SGW and PGW do not need to keep the bearer context information of the IoT terminal all the time, thereby alleviating the memory pressure of the SGW and PGW, avoid its performance being affected.

Description of drawings

FIG. 1 is a method flowchart of a method for establishing an EPC bearer provided by Embodiment 1 of the present invention;

FIG. 2 is a method flowchart of a method for establishing an EPC bearer provided by Embodiment 2 of the present invention;

FIG. 3 is a method flowchart of a method for establishing an EPC bearer provided by Embodiment 3 of the present invention;

FIG. 4 is a method flowchart of a method for establishing an EPC bearer provided in Embodiment 4 of the present invention;

FIG. 5 is a schematic structural diagram of a mobility management entity provided by Embodiment 5 of the present invention;

FIG. 6 is a schematic structural diagram of an Internet of Things terminal provided by Embodiment 6 of the present invention.

Detailed ways

In order for those skilled in the art to better understand the technical solution of the present invention, the EPC bearer establishment method, mobility management entity and Internet of Things terminal provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

The Internet of Things terminal involved in the present invention is a terminal applying NB-IoT (Narrowband Internet of Things) technology, which can work in the power saving mode. In the power saving mode, the working time of the Internet of Things terminal is divided into active time and power saving. During the active period, the IoT terminal can normally carry out communication activities, while during the power-saving period, the IoT terminal only maintains the registration state and does not perform communication activities. The EPC bearer establishment method provided by the present invention is used to establish an EPC bearer when the Internet of Things terminal is working in the power saving mode, so as to improve the memory resource utilization rate of the service gateway and the PDN gateway, wherein, the EPC bearer refers to the terminal Before using the 4G core network for communication, a connection is established between functional entities in the 4G core network for information transmission.

Embodiment one

This embodiment provides a method for establishing an EPC bearer, using a mobility management entity (MME) as an execution subject, as shown in FIG. 1 , the method includes:

Step S101, receiving attachment information sent by an Internet of Things terminal.

When the Internet of Things terminal starts to attach, it sends attachment information to the MME. The attachment information includes: type information of the Internet of Things terminal and power saving mode parameters; wherein, the type information of the Internet of Things terminal is used to represent the type of the Internet of Things terminal, Specifically, it includes fixed-position IoT terminals and mobile-position IoT terminals; the power-saving mode parameter includes the active duration of the IoT terminal, which refers to the duration of a single communication activity of the IoT terminal in the power-saving mode.

Step S102 , judging whether the Internet of Things terminal is a fixed-location Internet of Things terminal according to the type information of the Internet of Things terminal.

When it is determined that the IoT terminal is a fixed-position IoT terminal, step S103 and step S104 are executed simultaneously; and when it is determined that the IoT terminal is not a fixed-position IoT terminal, the flow of the method is ended.

Step S103, controlling the service gateway and the PDN gateway to establish and store bearer context information of the IoT terminal.

When the MME determines that the IoT terminal is an IoT terminal with a fixed location, it sends a request to the Service Gateway (SGW) to establish bearer context information of the IoT terminal, and the SGW establishes and saves the IoT terminal's bearer context information after receiving the request. Bearer context information, at the same time, the SGW sends a request to the PDN gateway (PGW) to establish the bearer context information of the IoT terminal, and the PGW establishes and saves the bearer context information of the IoT terminal after receiving the request. It should be noted that the establishment and storage of the bearer context information of the IoT terminal by the SGW and the PGW is already a prior art in the art, so the present invention will not repeat it in detail.

Step S104, sending an instruction to turn off its own periodic tracking area update switch to the Internet of Things terminal, so that the Internet of Things terminal can automatically turn off its own periodic tracking area update switch after receiving the instruction to turn off its own periodic tracking area update switch.

In the prior art, the Internet of Things terminal will periodically update the tracking area in the power saving mode, and apply to the MME for the active time when updating the tracking area. However, in the present invention, since it has been determined that the Internet of Things terminal is An IoT terminal with a fixed location, so the base station cell it is attached to will not change under normal circumstances, so in the method flow of the present invention, the IoT terminal does not need to perform periodic tracking area updates, so when it is judged that the IoT terminal When the terminal type is a fixed location, turn off the periodic tracking area update function of the terminal to reduce unnecessary interactions.

Step S105, after the active duration, control the service gateway and the PDN gateway to delete the bearer context information of the IoT terminal.

In this embodiment, after the MME controls the SGW and PGW to establish and save the bearer context information of the IoT terminal, after the active duration, the IoT terminal enters the power saving duration. At this time, the IoT terminal only stays in the Therefore, at this time, the MME again controls the SGW and PGW to delete the bearer context information of the IoT terminal, so that there is no need to save useless bearer context information in the SGW and PGW, thereby improving its memory resource utilization.

In the EPC bearer establishment method provided in this embodiment, when the IoT terminal is active for a period, the MME controls the SGW and PGW to establish and save the bearer context information of the IoT terminal, and when the active period of the IoT terminal ends, the MME controls the SGW and the PGW delete the saved bearer context information of the IoT terminal, so that the SGW and PGW do not need to keep saving the bearer context information of the IoT terminal, thereby alleviating the memory pressure of the SGW and PGW and avoiding their performance being affected.

Embodiment two

This embodiment provides a method for establishing an EPC bearer. The method for establishing an EPC bearer provided by this embodiment is a supplement to Embodiment 1, as shown in FIG. 2 .

In this embodiment, in the attachment information sent by the Internet of Things terminal, the power saving mode parameters may also include the power saving time period. During the power saving time period, the Internet of Things terminal only maintains the registration status in the network without performing communication activities. , in the present invention, the working hours of the Internet of Things terminal are alternately active hours and power-saving hours. Further, after step S105, the Internet of Things terminal enters the power-saving period after the active period, and then after the power-saving period ends, the IoT terminal enters the active period again. At this time, after step S105, the following steps are included:

Step S106, when the power-saving duration of the IoT terminal is over, receive the tracking area update request sent by the IoT terminal.

Step S107, after receiving the tracking area update request, control the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and return to step S105.

In this embodiment, when the IoT terminal ends the power-saving duration and enters the active duration again, the bearer context information of the IoT terminal needs to be established again. At this time, the IoT terminal will send a tracking area update request to the MME. After receiving the tracking area update request, control the Serving Gateway (SGW) and the PDN Gateway (PGW) again to establish and save the bearer context information of the IoT terminal. The establishment process of the bearer context of the IoT terminal is the same as that in step S103, and will not be repeated here. In addition, it should be noted that in this implementation, only the automatic periodic tracking area update function of the IoT terminal is turned off. , but the tracking area update function of the Internet of Things has not been turned off, that is, the IoT terminal can still actively initiate the update of the tracking area.

In addition, in this embodiment, the active duration of the Internet of Things terminal is timed by setting a timer. Specifically, as shown in FIG. 2, between step S103 and step S105 also includes:

Step S108, setting a timer.

The timing duration of the timer is the active duration of the IoT terminal.

Step S109, monitoring whether the timer expires.

In step S109, when it is detected that the timer counts down, step S105 is executed.

In this embodiment, the active duration of the IoT terminal is monitored by setting a timer in the MME. Of course, in addition, the present invention can also set a timer in the IoT terminal to time the active duration of the IoT terminal. Monitoring, the present invention does not specifically limit the setting position and setting method of the timer, as long as the active duration of the IoT terminal can be timed and monitored.

Embodiment three

This embodiment provides a method for establishing an EPC bearer, using an Internet of Things terminal as an execution subject, as shown in FIG. 3 , the method includes:

Step S201, sending attachment information to the MME.

When the IoT terminal attaches after booting, it sends attachment information to the MME. The attachment information includes: its own type information and power saving mode parameters; where the type information of the IoT terminal is used to represent the type of the IoT terminal, specifically Including fixed-position IoT terminals and mobile-position IoT terminals; power-saving mode parameters include its own active duration, which refers to the duration of a single communication activity of an IoT terminal in power-saving mode.

After receiving the attachment information, the MME judges whether the IoT terminal is a fixed-location IoT terminal according to the type information, and after judging that the IoT terminal is a fixed-location IoT terminal, controls the serving gateway (SGW) and PDN The gateway (PGW) establishes and saves the bearer context information of the IoT terminal, and controls the SGW and PGW to delete the bearer context information of the IoT terminal after the active period. In this embodiment, the process of the MME controlling the SGW and the PGW to establish and delete the IoT terminal is the same as step S103 in the first embodiment, and will not be repeated here.

Step S202, receiving an instruction to turn off its periodic tracking area update switch returned by the MME.

Step S203 , according to the instruction to turn off the own periodic tracking area update switch, turn off the own periodic tracking area update switch.

In the prior art, when the IoT terminal is in the power saving mode, the IoT terminal will periodically update the tracking area, and apply to the MME for the active duration when updating the tracking area, but in the present invention, since it has been determined The Internet of Things terminal is an Internet of Things terminal with a fixed location, so the cell of the base station it is attached to will not change under normal circumstances. Therefore, in the method flow of the present invention, the Internet of Things terminal does not need to perform periodic tracking area updates, so When it is determined that the terminal type of the IoT terminal is a fixed location, the periodic tracking area update function of the terminal is turned off to reduce unnecessary interactions.

In the EPC bearer establishment method provided in this embodiment, when the IoT terminal is active for a period, the MME controls the SGW and PGW to establish and save the bearer context information of the IoT terminal, and when the active period of the IoT terminal ends, the MME controls the SGW and the PGW delete the saved bearer context information of the IoT terminal, so that the SGW and PGW do not need to keep saving the bearer context information of the IoT terminal, thereby alleviating the memory pressure of the SGW and PGW and avoiding their performance being affected.

Embodiment four

This embodiment provides a method for establishing an EPC bearer, which is a supplement to the method for establishing an EPC bearer provided in Embodiment 3. Specifically, in this embodiment, in the attachment information sent by the IoT terminal to the MME, the power saving mode The parameters also include the power-saving duration of the IoT terminal. Within the power-saving duration, the IoT terminal only maintains the registration status in the network without performing communication activities. In the present invention, the working duration of the IoT terminal is alternately active. duration and power saving duration. In step S202, after the IoT terminal receives the instruction to turn off its periodic tracking area update switch returned by the MME, it also includes the following steps while executing step S203:

Step S204, start a timer.

The timing duration of the timer is the sum of the active duration and the power saving duration.

Step S205, whether the real-time monitoring timer expires.

When it is detected that the timer counts down, step S206 is executed.

Step S206, sending a tracking area update request to the MME, so that the MME controls the SGW and the PGW to establish and save the bearer context information of the IoT terminal after receiving the tracking area update request.

In this embodiment, a timer is set in the IoT terminal to time a working cycle of the IoT terminal, where a working cycle of the IoT terminal refers to the active duration and the power saving duration of the IoT terminal Sum. When the IoT terminal receives an instruction from the MME to turn off its periodic tracking area update switch, it means that the IoT terminal starts to enter the active duration, that is, the IoT terminal starts to enter a working cycle. At this time, the IoT terminal starts the timer Timer to time the working cycle, and monitor whether the timer is over in real time. When the timer ends, it means that a working cycle of the IoT terminal has ended. At this time, the IoT terminal needs to initiate a tracking area update request to The MME is triggered to control the SGW and the PGW to establish and save the bearer context information of the IoT terminal again.

In addition, it should be noted that in the present invention, when the network capability parameters of the IoT terminal need to be modified, such as modifying the power saving mode parameters, when the IoT terminal initiates a tracking area update request to the MME, the update request will carry the required For the modified network parameters, after receiving the tracking area update request, the MME re-determines the power saving mode parameters of the IoT terminal according to the network parameters carried in the tracking area update request.

Embodiment five

This embodiment provides a mobility management entity (MME). As shown in FIG. 5 , the mobility management entity includes: a receiving unit 11, a judging unit 12, a first control unit 13, and a sending unit 14; Receive the attachment information sent by the Internet of Things terminal, the attachment information includes: the type information of the Internet of Things terminal and the power saving mode parameter, and the power saving mode parameter includes the active duration of the Internet of Things terminal; the judging unit 12 uses According to the type information of the Internet of Things terminal, it is judged whether the Internet of Things terminal is an Internet of Things terminal at a fixed location; the first control unit 13 is used to determine whether the Internet of Things terminal is an Internet of Things terminal at a fixed location when the judging unit 12 determines When the terminal is connected to the Internet, the control service gateway and the PDN gateway establish and save the bearer context information of the Internet of Things terminal; the sending unit 14 is used for when the judging unit 12 determines that the Internet of Things terminal is a fixed-position Internet of Things terminal, Sending an instruction to turn off its own periodic tracking area update switch to the Internet of Things terminal, so that the Internet of Things terminal automatically turns off its own periodic tracking area after receiving the instruction to turn off its own periodic tracking area update switch An update switch; the first control unit 13 is further configured to control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active time period elapses.

For the mobility management entity (MME) provided in this embodiment, when the IoT terminal is active for a period, the MME controls the SGW and PGW to establish and save the bearer context information of the IoT terminal, and when the active period of the IoT terminal ends, then The MME controls the SGW and PGW to delete the saved bearer context information of the IoT terminal, so that the SGW and PGW do not need to keep saving the bearer context information of the IoT terminal, thereby alleviating the memory pressure of the SGW and PGW and avoiding their performance affected

Further, in some embodiments, the power saving mode parameters received by the receiving unit 11 also include the power saving duration of the IoT terminal, and at this time, the receiving unit 11 is also used to When the power duration ends, receive the tracking area update request sent by the IoT terminal; the first control unit 13 is also configured to control the service gateway and the tracking area update request after the receiving unit 11 receives the tracking area update request; The PDN gateway establishes and saves the bearer context information of the IoT terminal, and is further configured to control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active time period elapses.

In some embodiments, the MME further includes: a timer 15, a second control unit 16, and a monitoring unit 17; wherein the second control unit 16 is used to control the service gateway and the PDN at the first control unit 13 After the gateway establishes and saves the bearer context information of the IoT terminal, and before the first control unit 13 controls the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal, start the timing device 15, the timing duration of the timer 15 is the active duration of the IoT terminal; the monitoring unit 17 is used to monitor whether the timer 15 is timed out, and when it is detected that the timer 15 is timed out , instructing the first control unit 13 to control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal.

The mobility management entity provided in this embodiment is used to implement the EPC bearer establishment method described in Embodiment 1 and Embodiment 2 of the present invention. Therefore, the functional units of the mobility management entity in this embodiment and the interaction between functional units For the process, please refer to the description of the corresponding method steps in Embodiment 1 and Embodiment 2, which will not be repeated here.

Embodiment six

This embodiment provides an Internet of Things terminal. As shown in FIG. 6, the Internet of Things terminal includes: a sending unit 21, a receiving unit 22, and an automatic closing unit 23; wherein the sending unit 21 is used to send attachment information to a mobility management entity, The attachment information includes: its own type information and power-saving mode parameters, and the power-saving mode parameters include its own active duration, so that the mobility management entity can, after receiving the attachment information, judging whether the Internet of Things terminal is an Internet of Things terminal at a fixed location, and after determining that the Internet of Things terminal is an Internet of Things terminal at a fixed location, controlling the service gateway and the PDN gateway to establish and save the bearer context information of the Internet of Things terminal, And after the active duration, control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal; the receiving unit 22 is configured to receive the self-closing periodic tracking area update returned by the mobility management entity An instruction to switch; the automatic closing unit 23 is configured to automatically close its own periodic tracking area update switch after the receiving unit 22 receives an instruction to close its own periodic tracking area update switch.

Further, in some embodiments, the power saving mode parameters sent by the sending unit also include the power saving duration of the IoT terminal; the IoT terminal also includes: a timer 24, a timer control unit 25 and a monitoring unit 26; wherein The timer control unit 25 is configured to start the timer 24 after the receiving unit 22 receives the instruction to turn off the periodic tracking area update switch returned by the mobility management entity, and the timer 24 The timing duration is the sum of the active duration and the power-saving duration; the monitoring unit 26 is used to monitor in real time whether the timer 24 ends, and when it is detected that the timer 24 ends, indicate the The sending unit 21 sends a tracking area update request to the mobility management entity, so that the mobility management entity, after receiving the tracking area update request, controls the serving gateway and the PDN gateway to establish and save the IoT terminal's Carry context information.

The IoT terminal provided in this embodiment is used to implement the EPC bearer establishment method provided in Embodiment 3 and Embodiment 4 of the present invention. Therefore, the functional units of the IoT terminal in this embodiment and the connections between the functional units For the interaction process, please refer to the description of the corresponding method steps in Embodiment 3 and Embodiment 4, and details are not repeated here.

It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. A method for establishing an EPC bearer, comprising: Receive the attachment information sent by the Internet of Things terminal, the attachment information includes: the type information of the Internet of Things terminal and the power saving mode parameter, the power saving mode parameter includes the active duration of the Internet of Things terminal; the Internet of Things The working hours of the terminal are alternately active hours and power-saving hours; judging whether the IoT terminal is a fixed-position IoT terminal according to the type information of the IoT terminal; When it is determined that the IoT terminal is an IoT terminal at a fixed location, the control service gateway and the PDN gateway establish and save the bearer context information of the IoT terminal, and at the same time send a message to the IoT terminal to disable its own periodic tracking an instruction of an area update switch, for the IoT terminal to automatically turn off its own periodic tracking area update switch after receiving the instruction to turn off its own periodic tracking area update switch; After the active duration, control the service gateway and the PDN gateway to delete the bearer context information of the IoT terminal; when the power saving duration of the IoT terminal ends, receive the tracking sent by the IoT terminal District update request. 2. The method according to claim 1, wherein the power saving mode parameters also include the power saving duration of the IoT terminal; After the step of controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal, it further includes: After receiving the tracking area update request, controlling the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal; After the active duration, continue to execute the controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal. 3. The method according to claim 1 or 2, wherein after the control service gateway and the PDN gateway establish and save the bearer context information of the IoT terminal, and after the control service gateway and the PDN gateway Before the PDN gateway deletes the bearer context information of the IoT terminal, it also includes: A timer is set; the timing duration of the timer is the active duration of the Internet of Things terminal; monitoring whether the timer expires; When it is detected that the timer expires, the step of controlling the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal is executed. 4. A method for establishing an EPC bearer, comprising: Send attachment information to the mobility management entity, the attachment information includes: its own type information and power saving mode parameters, the power saving mode parameters include its own active duration, for the mobility management entity to receive the attachment information, judge whether the Internet of Things terminal is an Internet of Things terminal at a fixed location according to the type information, and after judging that the Internet of Things terminal is an Internet of Things terminal at a fixed location, control the service gateway and the PDN gateway to establish and save the The bearer context information of the IoT terminal, and after the active duration, control the service gateway and the PDN gateway to delete the bearer context information of the IoT terminal; the working duration of the IoT terminal alternates with the active duration and power saving time; receiving an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity; Turn off its own periodic tracking area update switch according to the instruction to turn off its own periodic tracking area update switch; when the power-saving duration of the Internet of Things terminal ends, send a tracking area update request. 5. The method according to claim 4, wherein the power-saving mode parameters also include its own power-saving duration; the method further comprises: After receiving the instruction to turn off the periodic tracking area update switch returned by the mobility management entity, start a timer, and the timing duration of the timer is the sum of the active duration and the power saving duration; Real-time monitoring of whether the timer is timed out; When it is detected that the timer expires, a tracking area update request is sent to the mobility management entity, so that the mobility management entity controls the serving gateway and the PDN after receiving the tracking area update request The gateway establishes and saves the bearer context information of the IoT terminal. 6. A mobility management entity, comprising: The receiving unit is configured to receive the attachment information sent by the IoT terminal, the attachment information includes: the type information of the IoT terminal and a power saving mode parameter, and the power saving mode parameter includes the active duration of the IoT terminal ; The working hours of the Internet of Things terminal are alternately active hours and power-saving hours; A judging unit, configured to judge whether the IoT terminal is a fixed-position IoT terminal according to the type information of the IoT terminal; The first control unit is configured to control the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal when the judging unit determines that the IoT terminal is a fixed-position IoT terminal; The sending unit is configured to send an instruction to the IoT terminal to turn off its own periodic tracking area update switch when the judging unit determines that the IoT terminal is a fixed-position IoT terminal, for the IoT terminal to After receiving the instruction to turn off its own periodic tracking area update switch, the terminal automatically turns off its own periodic tracking area update switch; The first control unit is further configured to control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active duration; The receiving unit is further configured to receive a tracking area update request sent by the Internet of Things terminal when the power-saving duration of the Internet of Things terminal ends. 7. The mobility management entity according to claim 6, wherein the power saving mode parameter also includes the power saving duration of the Internet of Things terminal; The first control unit is further configured to, after the receiving unit receives the tracking area update request, control the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and also use After the active duration, control the serving gateway and the PDN gateway to delete the bearer context information of the IoT terminal. 8. The mobility management entity according to claim 6 or 7, wherein the mobility management entity further comprises: a timer, a second control unit, and a monitoring unit; Wherein, the second control unit is configured to control the service gateway and the PDN gateway after the first control unit controls the service gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal, and after the first control unit controls the service gateway and before the PDN gateway deletes the bearer context information of the IoT terminal, start the timer, and the timing duration of the timer is the active duration of the IoT terminal; The monitoring unit is configured to monitor whether the timer expires, and when it is detected that the timer expires, instruct the first control unit to control the serving gateway and the PDN gateway to delete the IoT terminal The steps to carry context information. 9. An Internet of Things terminal, characterized in that, comprising: A sending unit, configured to send attachment information to a mobility management entity, where the attachment information includes: its own type information and power-saving mode parameters, and the power-saving mode parameters include its own active duration for the mobility management entity to After receiving the attachment information, judge whether the IoT terminal is a fixed-position IoT terminal according to the type information, and control the service gateway and the PDN gateway after judging that the IoT terminal is a fixed-position IoT terminal Establishing and storing the bearer context information of the IoT terminal, and controlling the service gateway and the PDN gateway to delete the bearer context information of the IoT terminal after the active duration; the work of the IoT terminal The duration alternates between active duration and power saving duration; a receiving unit, configured to receive an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity; An automatic closing unit, configured to automatically close its own periodic tracking area update switch after the receiving unit receives an instruction to close its own periodic tracking area update switch; The sending unit is further configured to send a tracking area update request when the power saving duration of the IoT terminal ends. 10. The Internet of Things terminal according to claim 9, wherein the Internet of Things terminal further comprises: a timer, a timer control unit and a monitoring unit; The power-saving mode parameters also include the power-saving duration of the Internet of Things terminal; The timer control unit is configured to start the timer after the receiving unit receives an instruction to turn off its own periodic tracking area update switch returned by the mobility management entity, and the timing duration of the timer is the The sum of the active duration and the power saving duration; The monitoring unit is configured to monitor in real time whether the timer expires, and when it is detected that the timer expires, instruct the sending unit to send a tracking area update request to the mobility management entity for the mobile After receiving the tracking area update request, the management entity controls the serving gateway and the PDN gateway to establish and save the bearer context information of the IoT terminal.

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